bigelow



7 in. 93,799. f PATENTED we. 17, 1869. y j E. B. BIGELOW, HARNESS OPERATING IMEGHANISM FOR LOOMS.

. 3 BEBBTSSHEET 1.-

To all whom-it meg] concerh i I -ma ewe owne- ERASTUS 1B. IGE O'W} on BosTon; AssA-cHnsE-T 'rs.

' Zet tersPa m 'W ,1 9. M u 1 3 r it kuown that I, ERASTUS B, BiQ'ELow; of Bus; ton, in the-county of Sufiblhand State-of Massachue =setts, have inventedcertain jnew and lisefni. I- np ove ments in the flaw ess-Motion 'for Power-Looms; rand I116 h, ei'ehy'declare that-the followingis n -fiill and exact description thereof;ifefei'encchci a Figure I is a; ii'cnelemtion'ofjnly miproi enie hining the latch-levels with the haianceeleyei loose connection, whereby-a continhousr'rotal yimo and-another lifting-ha m. v

The loom-firmne is, marked a,;a,ndj the lay-shaft, b'.

exemplify thenn and .Fignre 2, 3.

accompanying drawinggnndto' tiled tersfof ef ence marked thepeom" 1 ftrhand'leveti on thereof. A-pai'tof my invention wr eiate'sto o-mode of' co ment of .the pattern-surface is rendered p ljactiflflb nnothenpart relates to a mode of preventing*the latohlevers from escaping undnl'y from the liftings-hm's;

The-lealvesrof he dd ies or hames'ses are xziarked c, connected with reciprocat ngjacks levers If, onhy eor ds, inthe "usual The reciprocating: jocks dasarrianged v ertically;

ney are fill the guide-trough when placed therein; os-ni'uwve'described,- sufficient play, however heing giyten tohliow theni to r'nove up'and down freely,- as they'are required Pwjectiomflk, on their nppei The reciprocati r zontal liflsing-hals even shed, :is is nsnzl-l.

They are made to open and it four-armed lever, o,-which oscillates on astnd, '11.

. Two of the arms of the four-armed lever carry came.

1'o1ic1s', q,.one for each of the'faeee of the cam, n hilst the other two are connected by connecting-rods r, to

their respective lifting-bars b The com -n may hevaricd in fonn; acconiing to' the gih d. fi

I 5,-extehding from theinftolwhichx [Etch-levers are severally jointed, the latch-levers-heing formed with a hook' on each end, 'and a cam-like acks "d are, operated h'ytwo horiwhich vibrate in a vertical plane, one above and the other below the minsn', and have theiraxesm over the cioth-fim'ning line, to make an 1 closelihe pain of shears; by adouble-faced own, 1, on thelay-shait b, acting on side'by'side, in aighide-trongh, 9;.afiizged to theloon r w frame, a top yiew-of which is given'in Fignrefifand a. Y

= .x'iew, as seen when I shaped as represented in Figni'e '4 and hove I 'flan'gesh, on thein sides, of such thickness as to nearly "The s ohe dnle refers-ed es-mime I ett'ets fiatonto f I i v a double-crank: may he substitutedjon the cain,; a'i

yt- 'cminectings'n J m; onev or t-hegotherofithe z lmoks of the latchleversy eisezol' idcpre'ss thelrecipi ogting jocks;.and'fornithe open ;sl ieii';ga;ndjsyhen they ate-- ciosetl; they lfyvact afl ineTamiclose the shed, 'os,is usnzil gjg Th1 eni-like'proj 'tionskghetbi ei'efei'ied tg, on'the n egarms of the l ech-isms, ,mwe; gas sdrawthe nppe flhooks of thelnthilevfls way. from theiriifting-bar andj cause, their. lowefhooks'toengage; 3

v ne'zfll lefhnn supported; all the -iiatch-lever's wv'onld engage withlowepiifting-har,anil'aiithelheddl" Aseriesofibalfince-ieveirs; u,'--o o1' I hen-with thcmimhe'r of the-latch-leyers',.o on axis,'-t, and-hasyoufitsdPendign-zirh r 'faces,.=1:,"- which act onfche caiih-likb project 181139]!- the latch-levels, Before described.

Their .horizontalnrms carry weigh ,l(-i br-.\ifhich-1 springs'mgtybe-substituted)jwhichiih'c 'o 'e'ti'mn siif ficienttto.colonel-balancetheweigh V of h'cienmeiike lateh l'ex eiis, so'ijh'at when they project-ions k, on the are allowed hQdQSCGild, they will throw the nppenihooks of the latch-layers on to thenpperglifiing bangland re- ;Ie'ase thcir'lower hooksfiom theio yel lifting-hnr;then, Whentheweightsgv'are mised,-t1ie weight ofthe-ca-mvlike projections k will dmw thcj upper hooks of the latch leve s fi'omthe-upper liihing-hmynnd throw their lowerfhgjoks under the loweriifting-hm'. I

'govei'nthe action of thebzihmce-levcrs, o; pat-term :surface formedon nicylinde'r, or on' chain or band cn rried by-a. cylinder, is'clnployed, which' has cum-like" projections 21 armnged upon it, in accordm-iccwith the desircd'fignge, as-is usual.

- It is carried by an axis, which turns in o. long by the lay-shaft b,:,throngh'the medium of an upright shaft, o,hcvei-gears bgf-angiwor n and gear d and d. V

Vhen thelifting-Misfireopeneththey by engaging To enable the weaver to-sdjnst the pattern-surface, when required, the upright shad a carries 'a crank, e,

and isprovidccl wi in Figure 9,) by w engaged anddisengaged therewit th at clutch-anangemcnt, (as shown hich its bevel-gear b may be easily When the pattern-surface revolves, its cam-like projections 2; act 1! weighted arms of pen similar-projections f, on the the balance-levers, and by raising thc:n, .eiiect the required changes in the movement of the heddles.

It is important to note ,th ance-levers, is stationary,

at the axis t, of the baiwhilst the'latch-levers ha ve an np-anddown movement, and that, by'reason of the loose coimect-ion between latch-levers,tl1e balance-levers m the balance-levers'and the ay be inoved by the pattern-surface to efiect their changes, whilst the latch leveisT'are engaged with the liftin der a continuous practicable,

Now,

(levers,

of thebalance-levers, and suppose, also, the pattern-surface -bars, and thus renmevement oi the pattem-snrI-ace snp xnsethe cam-like in-east k, of ,the latchto beei'ther above orbelow the cam-surfaces v as will be. the caseiii wearing;

that thel con tinnous movement of has allowed .the weighted armof the balance-levers-to descend, and throw their campath of the cam-like projections k, -like projections It, as they tion to close theshed, will in a raised position until the lower hooks of the latch-levers are set free from the lowerlifiing-bar, when th the upper hook of the latch ing-ban'. It will be wider the cam-like projections k stri faces r, the weigh lower hooks of the latch before they have completed their movement.

To prevent this, levers fi'om escapin vibrations, latch-hooks g -le,vers on to the upper ll? description, that when ke against the cam-surn, from this ted am -ievers of! of their lifting-bar, and also to prevent any of the lately. g from their lifting-bars dining their to the cnds'of the latclbleve s, and hold the latchlevcis in position withdrawn whilst the The latch-hooks eillate in stands 0'',

described.

whilst-"they are in action, and are are beingshii'ted. are carried by shafts h, which asey will descend, and throw ns 'w' will tend to throw the:

are employed, which hook on A The latch-hook g of the upper lifting-bar, tends toward the latch-levers by its own gravity, while that of the lower lifting-bar is drawn toward them by the coiled spring j, on the shaft h, and when they are left ievelsand hold them in position, V

The latch-hooks are released to allow the latch-levers to be shifted, by arms L on'the shafts h, which, when the lifting-bars-areabout completing their closing movement, strike against stops 1, projecting from. the stand 2, and turn the shafts h far enough torelease the latch-hooks. .Then when the lifting-bars begin their opening movement, the arms It leave the stops l, and allow the latch-hoolgs to hook on to the ends of the latch-levers, and hold them in position ntn til they are released as before.

Haring described my invention, some of the modifications of which without departing from its distingu What I clain i as n by Letters Patent, is- V v The combination. of mechanism herein described, forgoverning the order in which the leaves of heddles are raised andde of a pattern-surface, havinga continuous rotary movment, latch-levers which engage interchangeably with lifting-bars, to ibrm the shed, and balance-levers, which transmit the goirernin ;to-,the latch-levers by .chang'es are effected, whilst the shed is for:

it is susceptible,-

and are; s'ep'amtul therefrom hooks, or their equivalents, for preventiu escape of the latch-levers from'thehfl .stantially asjspecified.

Aiso, thecombination for operating the liitin faced cam prodncin posite directions,- necth g-rodaby which the two reciprocating motions of the cam are communicated toltheir res ing-bars, substantially as specified.

an untimely of mechanism herein described, g-b'ars, consisting of a double g two reciprocating motions-in op- 'Witnesses;

aflixed to the lifting-bars], before Nancy E. Means,

Hemmer T. Wmrusx.

free to do so, they will hook on to the, ends of the latchand pointed outishing I principles, ew therein, and desireto secure pressedfto form the shed, 'consistiw' g-action 'of the pattem-surihcc contact therewith, when-their v 4 I ued,'snbstantiallyas specified. Also, in combiimtion with the hitch-leverafhitrh I oscillatingJerer-arms and two con pectiveiiit-I E; B. BIGELOW. 

